Data transmission method, device and system, computer equipment and storage medium

The invention relates to a data transmission method, device and system, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring two-dimensional code packet data; the two-dimensional code packet data is generated based on a customization rule of the target tagging end; generating a key for the target tagging end based on the digital certificate corresponding to the target tagging end; and encrypting the to-be-sent two-dimensional code packet data according to the key, and sending the encrypted two-dimensional code packet data to the target tagging end. By adopting the method, the security of two-dimensional code packet data transmission can be improved. 本申请涉及一种数据传输方法、装置、系统、计算机设备、存储介质和计算机程序产品。所述方法包括：获取二维码码包数据；二维码码包数据基于目标赋码端的定制规则生成；基于目标赋码端对应的数字证书，生成针对目标赋码端的密钥；根据密钥对待发送的二维码码包数据进行加密，并将加密后的二维码码包数据发送至目标赋码端。采用本方法能够提高二维码码包数据传输的安全性。